This is general information, not legal advice, and reflects Ontario law as of September 2, 2026.
Why the AI itself isn't “practising law”
Ontario restricts who may practise law to a narrow group. Section 26.1(1) of the Law Society Act says a person other than a licensee in good standing may not practise law or provide legal services in Ontario. The Act's own definition of "legal services" (s. 1(5)-(6)) turns on a person applying legal principles and legal judgment to someone's circumstances or objectives — giving advice about a person's legal rights or responsibilities is one of the examples it names directly. A large language model predicting the next plausible word in a sentence isn't a person, and it can't hold a licence. Read literally, the prohibition governs who may practise, not which software they use while doing it.
Where the exposure actually lands
That's not the Law Society of Ontario's blessing for client-facing AI, though. Its April 2024 white paper on generative AI names the real risk directly: when a chatbot deals directly with the public, "there is a risk that it may be inappropriately or inadvertently providing legal advice… or creating other misunderstandings." The same guidance is just as direct that certain tasks "will require the input of the licensee and the application of their legal competence and cannot be delegated." Put the two together and the practical rule is simple: the software never becomes the one practising law without a licence — the lawyer or firm that deployed it unsupervised does, by letting a tool stand in for judgment a licensee was supposed to apply.
What stays with a human either way:
- Verification. Reading and confirming anything AI drafts before it reaches a client or a filing.
- Judgment calls. Applying legal principles to a client's specific circumstances — the part of "legal services" the Act actually defines.
- Supervision. Checking any AI-assisted work from staff the same way you'd check their non-AI work.
That's the same competence and supervision framework our deeper look at the LSO's generative-AI guidance walks through in full, mapped to the specific professional-conduct rules behind it. If you're evaluating a specific AI vendor for your practice, our four-question vendor safety checklist is the practical next step before anything client-facing goes live.
Practising law without a licence is one question; a separate one is whether a lawyer has to tell the court AI touched a filing at all. See our explainer on whether Ontario lawyers must disclose AI use in court filings for what the actual rule requires versus what it doesn't.